Average mail height

The average height of a piece of mail can vary depending on the type of mail and the country. However, here are some general guidelines on the average height of different types of mail:

1. Standard letter: 3.5 to 4.5 inches (8.9 to 11.4 cm)
2. Large envelope: 4.5 to 6.5 inches (11.4 to 16.5 cm)
3. Flat rate envelope: 6.5 to 12 inches (16.5 to 30.5 cm)
4. Package: 12 to 24 inches (30.5 to 61 cm) or more, depending on the size and weight of the package.

In the United States, the United States Postal Service (USPS) has specific guidelines for the maximum dimensions of mail pieces:

• Letters: 11.5 inches (29.2 cm) long, 6.125 inches (15.6 cm) high, and 0.25 inches (0.64 cm) thick
• Large envelopes: 12 inches (30.5 cm) long, 15 inches (38.1 cm) high, and 0.75 inches (1.9 cm) thick
• Flat rate envelopes: 12 inches (30.5 cm) long, 12 inches (30.5 cm) high, and 0.75 inches (1.9 cm) thick
• Packages: 130 inches (330.2 cm) long, 130 inches (330.2 cm) high, and 108 inches (274.3 cm) wide

Keep in mind that these are general guidelines, and the actual height of a piece of mail can vary depending on the specific item being mailed.